From long-expected new products like the Samsung Galaxy S6 and HTC One M9 to surprises like the Huawei Watch and HTC Vive, here's everything you missed on the day before the Mobile World Congress officially opened.

The Logitech Bluetooth keyboard case for the Tab S 10.5 is a compact way to add an extra level of protection to your slate, but the build quality of the keyboard is too cheap to justify its $100/£90 starting price.